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Seattle Wildfire Smoke: A shift in wind patterns pushed a thick layer of wildfire smoke over Seattle overnight.
The alerts cover King, Kitsap, Pierce, Snohomish and Thurston counties.
Officials say conditions will worsen as northwesterly winds shifted to the northeast Monday afternoon.
That shift pulled smoke in from the Spokane Complex fires and other blazes burning across Eastern and Central Washington.
The Puget Sound Clean Air Agency is tracking the situation closely.
The National Weather Service recognizes the agency as the region's leading air quality authority.
Officials there warn that air quality could turn unhealthy for sensitive groups. That includes people with existing health conditions.
They're advised to limit outdoor time and skip strenuous activity. The agency's forecast paints a tougher picture ahead.
Smoke is expected to settle closer to the ground. Air quality could reach unhealthy levels for the general public from Tuesday through Thursday.
Health officials point to real risks tied to wildfire smoke. It can trigger asthma attacks.
It can cause chest pain, coughing and headaches. It can lead to a fast heartbeat, irritated sinuses, stinging eyes and difficulty breathing.
Officials say the smoke can strain both the respiratory and cardiovascular systems. That's especially true for vulnerable groups.
Certain populations face higher risk. That includes babies and young children. It includes adults over 65.
It includes pregnant people, stroke survivors and those with heart disease, lung disease, respiratory infections or diabetes.
Health officials are urging these groups to take extra precautions. Recommended steps include staying indoors when possible.
Residents should avoid outdoor exercise or physical labor. Officials suggest closing windows and running air conditioners on recirculation mode.
Portable air cleaners can help too. Officials also recommend wearing an N95 or N100 mask when going outside.
Relief may not come until later in the week. The smoke is expected to linger over Seattle until Friday.
That's when the low-level wind pattern is forecast to shift again Thursday night. Even so, fire risk isn't going away.
The National Weather Service says warm, dry conditions through Friday will raise fire danger.
That threat is expected to be most severe over the Cascades and Olympics.
Visual Disclaimer: This is an AI-generated illustrative portrait. It is used for creative representation and does not depict a real-time event. Created by AD News Live.
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